Ecclesiastes 7:22

New International Version

for you know in your heart that many times you yourself have cursed others.

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The king also said to Shimei, “You know in your heart all the wrong you did to my father David. Now the Lord will repay you for your wrongdoing.

Do not pay attention to every word people say, or you may hear your servant cursing you—

All this I tested by wisdom and I said, “I am determined to be wise”— but this was beyond me.

For out of the heart come evil thoughts—murder, adultery, sexual immorality, theft, false testimony, slander.

With the tongue we praise our Lord and Father, and with it we curse human beings, who have been made in God’s likeness.